multi host client demo

src/accountant_stub.rs

@@ -114,6 +114,7 @@ impl AccountantStub {
     pub fn get_last_id(&mut self) -> FutureResult<Hash, ()> {
         let req = Request::GetLastId;
         let data = serialize(&req).expect("serialize GetId");
+        assert!(data.len() < 4096);
         self.socket
             .send_to(&data, &self.addr)
             .expect("buffer error");

src/bin/client-demo.rs

@@ -16,7 +16,7 @@ use solana::signature::{KeyPair, KeyPairUtil};
 use solana::transaction::Transaction;
 use std::env;
 use std::io::{stdin, Read};
-use std::net::UdpSocket;
+use std::net::{UdpSocket, SocketAddr};
 use std::process::exit;
 use std::time::Instant;
 use untrusted::Input;
@@ -120,7 +120,8 @@ fn main() {
     let chunks: Vec<_> = transactions.chunks(sz).collect();
     chunks.into_par_iter().for_each(|trs| {
         println!("Transferring 1 unit {} times...", trs.len());
-        let send_addr = "0.0.0.0:0";
+        let mut send_addr:SocketAddr = send_addr.parse().unwrap();
+        send_addr.set_port(0);
         let socket = UdpSocket::bind(send_addr).unwrap();
         let acc = AccountantStub::new(&addr, socket);
         for tr in trs {